I just enabled the Quick Launch and added it back. I use it for lots of stuff I don't launch and run often. I keep my taskbar only full of stuff I usually leave running for extended periods (Digsby, Zune, Firefox, Outlook, etc).
Why do you have your taskbar horizontal? You should make it vertical. It's more efficient use of space, as it allows 3 columns of systray icons at a time, meaning I don't need to hide any of them. Also, the clock will show not only the time and date, but the day. Also, quick launch will imitate the systray and give you 3 columns as well. Plus, the buttons are wider than they are tall, meaning they stack better vertically. Finally, having it horizontal on the middle edge of 2 monitors (preferably your secondary, so you can see alerts coming in when you're in a game) means you don't have to drag your mouse to the corner of the one monitor every time you want to use the start menu or click on something on the taskbar. It's in the middle, the closest you can be.
STOP BEING INEFFICIENT, MZZT.